PR-781 PR781 Orginal Heil Sound Black ProLine Performance Studio Microphone - Dynamic Desk Microphone for Elite Tranceivers and Podcasting - Original Heil Sound Frequency Response 50 Hz to 16,000 Hz Impedance Balanced 600 Ohms Out, 3 pin Polar Pattern Cardioid Output Level -55 dB Diaphragm Low-mass aluminum - Finish Black Satin Epoxy